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Prime Guard Premium RV & Marine Antifreeze -100°F Burst Protection - 1 Gal - 6 Jugs
Prime Guard

Prime Guard Premium RV & Marine Antifreeze -100°F Burst Protection - 1 Gal - 6 Jugs

Part Number: PG96ZR
In Stock
$112.00
RV Fresh Water
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You've made the most of the season. Now make sure winter doesn't set you back. This -100°F antifreeze keeps your RV, boat, or EV water system protected through deep freezes, so everything works like it should when it's time to roll. Great Prices for the best rv fresh water from Prime Guard. Prime Guard Premium RV & Marine Antifreeze -100°F Burst Protection - 1 Gal - 6 Jugs part number PG96ZR can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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Prime Guard RV Fresh Water - PG96ZR

  • Winterization
  • Antifreeze
  • Prime Guard

You've made the most of the season. Now make sure winter doesn't set you back. This -100°F antifreeze keeps your RV, boat, or EV water system protected through deep freezes, so everything works like it should when it's time to roll.


Highlights

  • All-Season Peace of Mind: Protects RV and marine water systems, plus boat engines, through the harshest winter conditions.
  • Made for Extreme Cold: Premium alcohol- and glycerin-free formula delivers dependable burst protection down to -100°F.
  • Cleaner, Safer Handling: Odorless and non-flammable, making it safer to handle and store.
  • Safe for Potable Water Systems: Suitable for all fresh-water plumbing, including copper, brass, and most plastics (except acetate).
  • Long-Term System Protection: Protects metal fittings and internal surfaces from rust and corrosion over time.
  • Bulk Pack Convenience: Includes six 1-gallon jugs - enough to winterize most RVs and boats completely.

Features to know about

Extreme Cold Protection

When temperatures drop, you need antifreeze you can trust. This -100°F formula protects your RV, boat, or EV water system during long-term subzero storage. It's alcohol- and glycerin-free, so it won't dry out seals or leave behind an odor, and it helps prevent corrosion so your system works properly when spring returns.

What is Burst Point vs. Freeze Point?

Antifreeze labels can be confusing. The -100°F rating reflects burst point, the point where treated lines won't crack or split, not the temperature where the fluid stays liquid. In extreme cold, lesser blends can start to slush, but this premium formula stays stable through the coldest nights and harshest storage conditions, so your system is ready when spring rolls around.

Specs:

Performance:

  • Type: premium alcohol- and glycerin-free propylene glycol antifreeze
  • Temperature rating: burst protection to -100°F
  • Intended climate: mild to harsh winter conditions
  • Corrosion protection: yes

Compatibility:

  • Applications: RVs, boats, electric vehicles with water-cooled systems, seasonal fresh-water systems, and boat motors

Package:

  • Quantity: (6) 1-gallon jugs


99306 Prime Guard Premium Alcohol and Glycerin Free RV & Marine Antifreeze -100°F - 1 Gal - 6 Jugs





Ratings & Reviews

5.0

1 reviews
You've made the most of the season. Now make sure winter doesn't set you back. This -100°F antifreeze keeps your RV, boat, or EV water system protected through deep freezes, so everything works like it should when it's time to roll.

by:


1
1

See what our Experts say about this Prime Guard RV Fresh Water

  • Is Pink Prime Guard Antifreeze Safe To Leave In The Lines All Winter Without Draining Til Spring?
    Yes, Scott, that’s exactly what it’s made for. All three Prime Guard formulas are non-toxic and won’t damage plumbing if left in place for the off-season. Just remember to flush with fresh water before first use. That said, I strongly recommend going with the glycerin-free options like -50F # PG36ZR and -100F # PG96ZR since they actually help lubricate seals, making them last longer than using budget-friendly ethanol-based antifreeze like -50F # PG56ZR. Do you sanitize with bleach or...
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  • Can I Use Any Prime Guard Antifreeze In Camper AND Pontoon Boat?
    Absolutely! All three Prime Guard formulas - # PG56ZR, # PG36ZR, and # PG96ZR - are safe for both RV and marine systems. They’re safe for potable water lines, pumps, and even outboard engine water jackets. Just be sure to flush thoroughly in spring, and it's best to stick with one type of base, rather than mixing ethanol-based with propylene glycol-based. Which antifreeze brands do you normally use to winterize them?
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  • Can I Mix Leftover Pink Antifreeze From Last Season With Other Brand In RV ?
    Ryan, if it’s another RV/marine formula propylene glycol or ethanol-based, it’ll mix fine with Prime Guard options. It's really only okay to mix if it's just a small amount of the other kind, not half and half as that could affect how well the RV resists bursting and gelling. What brand or type of antifreeze did you use last year? I can confirm the match. I'd recommend going with Prime Guard Glycerin Free RV & Marine Antifreeze -50°F Burst Protection - 1 Gal # PG36ZR if you're somewhere...
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  • Which Prime Guard RV & Marine Antifreeze Is Best For Jayco Eagle Fifth Wheel In Michigan Winter?
    Brian, for Michigan winters you’re right at the edge of what the ethanol-based Prime Guard # PG56ZR is built for. It gives you –50°F burst protection, which is plenty for typical storage, but if you see long subzero stretches, I’d bump up to the –100°F # PG96ZR. The nice thing is both formulas flush easily in the spring, so you can swap without any hassle. I also would strongly recommend the -100F option since it is alcohol and glycerin free, meaning the seals will stay protected longer. How...
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  • Is The Prime Guard Premium RV & Marine Antifreeze Propylene Glycol Based?
    Hello Steve, thanks for reaching out. Yes, the Prime Guard Premium RV & Marine Antifreeze # PG96ZR is propylene glycol (PG) based. It is great for freeze protection, but is also safer for your RV, and safer for the environment compared to alcohol or ethylene glycol antifreezes. What kind of camper are you winterizing? That time of year is fast approaching!
    view full answer...
  • Does Prime Guard Antifreeze Lubricate And Protect Seals And Fittings On RV or Boat?
    It actually does both, Kurk. The non-flammable formulas like Prime Guard Glycerin Free RV Antifreeze -50F # PG36ZR and -100F # PG96ZR help keep seals conditioned while preventing corrosion in fittings. That’s one reason they’re popular with Rv and boat owners who store for months unused in the winter. The standard ethanol based antifreezes are typically fine, but they don't lubricate seals and fittings like the two options above do. Have you noticed any stiffness or cracking in your faucets...
    view full answer...
  • Will Prime Guard Antifreeze Leave Taste Or Scent Behind In Water Lines After Flushing In Spring?
    After one good flush, any trace taste should disappear, Gerald. The # PG36ZR and # PG96ZR are especially clean-rinsing since they’re alcohol-free. The ethanol-based # PG56ZR might leave a light scent at first, but a vinegar rinse or Camco spring cleaner # CAM40207 clears it right up. Do you usually sanitize before your first trip out each year?
    view full answer...
  • How Many Gallons Of Antifreeze Does It Take To Winterize 35' Class A Motorhome?
    Doug, typically about 2–3 gallons will do the job on a travel trailer, but on a class A you are better off with about 4-5 gallons. Since Prime Guard comes in a six-jug case, you’ll have plenty. If you’re in an area that dips below zero, use the premium -100°F # PG96ZR otherwise, the –50°F # PG36ZR or # PG56ZR will do great. How’s your rig stored - covered lot or open pad?
    view full answer...
  • Antifreeze To Winterize 2021 Keystone Cougar Parked In Northern Illinois
    Mark, for Illinois you’re right on the border between the –50°F and –100°F options. The standard # PG56ZR ethanol-based blend will usually handle normal Midwest winters just fine, but if your rig sits in unheated storage for weeks of deep freeze, step up to the premium # PG96ZR for peace of mind. It costs a little more but adds serious protection against those random cold snaps. Do you store indoors or outside over winter?
    view full answer...
  • Will -50F Antifreeze Freeze Solid In Freezing Temperatures When Winterizing RV?
    Not solid, Jim, but the # PG36ZR Antifreeze will start to slush around freezing temps. The “–50°F” rating refers to burst protection, meaning your pipes won’t rupture even if the fluid thickens. For extended subzero weather, use the # PG96ZR rated to –100°F; it stays flowable far longer. How cold does it typically get where you store your RV? Fyi, I've attached a help article that covers winterizing an RV.
    view full answer...

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